Compared to the MHC molecule on the left, the MHC molecule on the right (in the drawing above) will bind a ______ peptide that, if foreign, will cause a T cell to activate and _________. The protein on the left is made up of two peptides, each with two domains. One peptide has domains labeled alpha 1 and 2, the other beta 1 and 2. The protein on the right is made up of two peptides, one with three domains labeled alpha 1, 2 and 3 and the other a single domain labeled beta MG.

The αβ receptors of T cells recognize specific peptide antigens based on their ________.1 pointlengthamino acid sequenceshape and surface R groupsbinding to specific MHC sub-types

Class I MHC molecule can ____________.bind to CD8 molecules on T cellspresent antigens to B cellsbind to CD4 molecules on T cellsbind to antibodies

Which statement is TRUE about the CD4 subset of T cells?Select one alternative:They recognise peptides presented by MHC class I.They recognise peptides presented by MHC class II.They kill cells that have phagocytosed bacteria.They kill virally infected cells.

The ability of the immune system to attack transplanted tissue from an unrelated donor is mysterious because T cells should not be able to bind to foreign _______.1 pointMHC I and II moleculesendogenous (cytosolic) antigensexogenous (phagocytized) antigensβ microglobulinslipids and glycolipids

Studies of the structure of the T-cell receptor indicate it has significant homologies to the _________ of immunoglobulins (antibodies), with the _______ peptides resembling the heavy chain.1 pointarms; α and γarms; β and δstem; α and γstem; β and δ